Brno Sewerage, Czech Republic | Water

Aral Sea, Central Asia Bangkok Wastewater, Thailand Black Sea, Regional Bradford UPM, UK Brighton/Hove Wastewater, UK Brno Sewerage, Czech Republic Cork Main Drainage, Ireland Corporate Development, Russia DC Water and Sewerage, USA Doe Park Reservoir, UK Equity, Irrigation, Poverty, Asia Esholt WwTW, UK Institutional Building, Romania Kpong Irrigation Project, Ghana Master Plan, Oman Mirfa Desalination, UAE Pumping Plants, Kuwait Shanghai Sewerage, China Transboundary Rivers, CIS Water Resources, China Thames Water Ring Main, UK Water Supplies, Uganda Wessex Water AMP4, UK

In focus

The project is part of an ISPA-funded programme to help upgrade environmental infrastructure in accordance with EU directivesThe Czech Republic's Ministry for Regional Development appointed Mott MacDonald as engineer for developing and improving sewerage and drainage systems in Brno. The €39 million project - €21 million of which is funded by the Brno authorities – is part of an ISPA-funded programme to help upgrade environmental infrastructure in accordance with EU directives.

Brno is the second largest city in the Czech Republic with more than 400,000 inhabitants and produces approximately 30 million m³ of wastewater per year. Municipal wastewater is collected and conveyed via the 974km long public sewer network – incorporating six primary trunk sewers – and 15 pumping stations to a treatment plant at Modřice in the southern suburbs.

The project is being carried out in three specific components.

Component 1 involves reconstruction of the sewer system in the old town area of Líšen. This will provide the area's 9200 residents with connection to the main sewer system and entails building 21.5km of foul sewer using open-cut construction techniques.

Component 2 focuses on completing the main and trunk sewers in three principal areas in order to provide an additional 14,000 inhabitants with mains sewerage.

Component 3 involves drainage of the historic city centre by constructing secondary collectors – serving as utility ducts – within which pipes of between 400mm and 1000mm diameter will be installed to replace the existing sewers. The ducts measure 3m by 4m internally with the depth to soffit ranging from 2m to 6m. They are being constructed using tunnelling methods as the site is within the city's central shopping area, where the buildings are historic in character with deep cellars, often extending under the roadway up to the line of construction. The ducts will also house various lengths of GRP water main.

Mott MacDonald‘s role – in joint venture with VRV as – focuses on transferring knowledge to the project implementation unit, supervising construction of the overall works and completing the duct network.